PHP常用的基本文件和目录操作总结，
来源：http://www.ido321.com/835.html
一、基本文件的操作
文件的基本操作有：文件判断、目录判断、文件大小、读写性判断、存在性判断及文件时间等
<span id="lnum1"> 1:</span><span> <?php</span>
<span id="lnum2"> 2:</span><span> header(<span>"content-type"</span>,<span>"text/html;charset=utf-8"</span>);</span>
<span id="lnum3"> 3:</span><span> <span>/*</span></span>
<span id="lnum4"> 4:</span><span> <span>*声明一个函数，传入文件名获取文件属性</span></span>
<span id="lnum5"> 5:</span><span> <span>*@param string $fileName 文件名称</span></span>
<span id="lnum6"> 6:</span><span> <span>*/</span></span>
<span id="lnum7"> 7:</span><span> <span>function</span> getFilePro($fileName)</span>
<span id="lnum8"> 8:</span><span> {</span>
<span id="lnum9"> 9:</span><span> <span>if</span>(!file_exists($fileName))</span>
<span id="lnum10"> 10:</span><span> {</span>
<span id="lnum11"> 11:</span><span> <span>echo</span> <span>'文件不存在<br/>'</span>;</span>
<span id="lnum12"> 12:</span><span> <span>return</span>;</span>
<span id="lnum13"> 13:</span><span> }</span>
<span id="lnum14"> 14:</span><span> <span>/*是否是普通文件*/</span></span>
<span id="lnum15"> 15:</span><span> <span>if</span>(is_file($fileName))</span>
<span id="lnum16"> 16:</span><span> {</span>
<span id="lnum17"> 17:</span><span> <span>echo</span> $fileName.<span>'是一个文件<br/>'</span>;</span>
<span id="lnum18"> 18:</span><span> }</span>
<span id="lnum19"> 19:</span><span> <span>/*是否是目录*/</span></span>
<span id="lnum20"> 20:</span><span> <span>if</span>(is_dir($fileName))</span>
<span id="lnum21"> 21:</span><span> {</span>
<span id="lnum22"> 22:</span><span> <span>echo</span> $fileName.<span>'是一个目录'</span>;</span>
<span id="lnum23"> 23:</span><span> }</span>
<span id="lnum24"> 24:</span><span> <span>/*输出文件的型态*/</span></span>
<span id="lnum25"> 25:</span><span> <span>echo</span> <span>'文件型态是：'</span>.getFileType($fileName).<span>'<br/>'</span>;</span>
<span id="lnum26"> 26:</span><span> <span>/*文件大小,转换单位*/</span></span>
<span id="lnum27"> 27:</span><span> <span>echo</span> <span>'文件大小是：'</span>.getFileSize(filesize($fileName)).<span>'<br/>'</span>;</span>
<span id="lnum28"> 28:</span><span> <span>/*文件是否可读*/</span></span>
<span id="lnum29"> 29:</span><span> <span>if</span>(is_readable($fileName))</span>
<span id="lnum30"> 30:</span><span> {</span>
<span id="lnum31"> 31:</span><span> <span>echo</span> <span>'文件可读<br/>'</span>;</span>
<span id="lnum32"> 32:</span><span> }</span>
<span id="lnum33"> 33:</span><span> <span>/*文件是否可写*/</span></span>
<span id="lnum34"> 34:</span><span> <span>if</span>(is_writable($fileName))</span>
<span id="lnum35"> 35:</span><span> {</span>
<span id="lnum36"> 36:</span><span> <span>echo</span> <span>'文件可写<br/>'</span>;</span>
<span id="lnum37"> 37:</span><span> }</span>
<span id="lnum38"> 38:</span><span> <span>/*文件是否可执行*/</span></span>
<span id="lnum39"> 39:</span><span> <span>if</span>(is_executable($fileName))</span>
<span id="lnum40"> 40:</span><span> {</span>
<span id="lnum41"> 41:</span><span> <span>echo</span> <span>'文件可执行<br/>'</span>;</span>
<span id="lnum42"> 42:</span><span> }</span>
<span id="lnum43"> 43:</span>
<span id="lnum44"> 44:</span><span> <span>echo</span> <span>'文件创立时间：'</span>.date(<span>'Y年m月j日'</span>,filectime($fileName)).<span>'<br/>'</span>;</span>
<span id="lnum45"> 45:</span><span> <span>echo</span> <span>'文件最后修改时间：'</span>.date(<span>'Y年m月j日'</span>,filemtime($fileName)).<span>'<br/>'</span>;</span>
<span id="lnum46"> 46:</span><span> <span>echo</span> <span>'文件最后打开时间：'</span>.date(<span>'Y年m月j日'</span>,fileatime($fileName)).<span>'<br/>'</span>;</span>
<span id="lnum47"> 47:</span><span> }</span>
<span id="lnum48"> 48:</span>
<span id="lnum49"> 49:</span><span> <span>/*</span></span>
<span id="lnum50"> 50:</span><span> <span>*声明一个函数，返回文件类型</span></span>
<span id="lnum51"> 51:</span><span> <span>*@param string $fileName 文件名称</span></span>
<span id="lnum52"> 52:</span><span> <span>*/</span></span>
<span id="lnum53"> 53:</span><span> <span>function</span> getFileType($fileName)</span>
<span id="lnum54"> 54:</span><span> {</span>
<span id="lnum55"> 55:</span><span> $type = <span>''</span>;</span>
<span id="lnum56"> 56:</span><span> <span>switch</span>(filetype($fileName))</span>
<span id="lnum57"> 57:</span><span> {</span>
<span id="lnum58"> 58:</span><span> <span>case</span> <span>'file'</span>:$type .= <span>'普通文件'</span>;<span>break</span>;</span>
<span id="lnum59"> 59:</span><span> <span>case</span> <span>'dir'</span>:$type .= <span>'目录文件'</span>;<span>break</span>;</span>
<span id="lnum60"> 60:</span><span> <span>case</span> <span>'block'</span>:$type .= <span>'块设备文件'</span>;<span>break</span>;</span>
<span id="lnum61"> 61:</span><span> <span>case</span> <span>'char'</span>:$type .= <span>'字符设备文件'</span>;<span>break</span>;</span>
<span id="lnum62"> 62:</span><span> <span>case</span> <span>'filo'</span>:$type .= <span>'管道文件'</span>;<span>break</span>;</span>
<span id="lnum63"> 63:</span><span> <span>case</span> <span>'link'</span>:$type .= <span>'符号链接'</span>;<span>break</span>;</span>
<span id="lnum64"> 64:</span><span> <span>case</span> <span>'unknown'</span>:$type .= <span>'未知文件'</span>;<span>break</span>;</span>
<span id="lnum65"> 65:</span><span> <span>default</span>:</span>
<span id="lnum66"> 66:</span><span> }</span>
<span id="lnum67"> 67:</span><span> <span>return</span> $type;</span>
<span id="lnum68"> 68:</span><span> }</span>
<span id="lnum69"> 69:</span>
<span id="lnum70"> 70:</span><span> <span>/*</span></span>
<span id="lnum71"> 71:</span><span> <span>*声明一个函数，返回文件大小</span></span>
<span id="lnum72"> 72:</span><span> <span>*@param int $bytes 文件字节数</span></span>
<span id="lnum73"> 73:</span><span> <span>*/</span></span>
<span id="lnum74"> 74:</span><span> <span>function</span> getFileSize($bytes)</span>
<span id="lnum75"> 75:</span><span> {</span>
<span id="lnum76"> 76:</span><span> <span>if</span>($bytes >= pow(2,40))</span>
<span id="lnum77"> 77:</span><span> {</span>
<span id="lnum78"> 78:</span><span> $<span>return</span> = round($bytes / pow(1024,4),2);</span>
<span id="lnum79"> 79:</span><span> $suffix = <span>'TB'</span>;</span>
<span id="lnum80"> 80:</span><span> }</span>
<span id="lnum81"> 81:</span><span> <span>else</span> <span>if</span>($bytes >= pow(2,30))</span>
<span id="lnum82"> 82:</span><span> {</span>
<span id="lnum83"> 83:</span><span> $<span>return</span> = round($bytes / pow(1024,3),2);</span>
<span id="lnum84"> 84:</span><span> $suffix = <span>'GB'</span>;</span>
<span id="lnum85"> 85:</span><span> }</span>
<span id="lnum86"> 86:</span><span> <span>else</span> <span>if</span>($bytes >= pow(2,20))</span>
<span id="lnum87"> 87:</span><span> {</span>
<span id="lnum88"> 88:</span><span> $<span>return</span> = round($bytes / pow(1024,2),2);</span>
<span id="lnum89"> 89:</span><span> $suffix = <span>'MB'</span>;</span>
<span id="lnum90"> 90:</span><span> }</span>
<span id="lnum91"> 91:</span><span> <span>else</span> <span>if</span>($bytes >= pow(2,10))</span>
<span id="lnum92"> 92:</span><span> {</span>
<span id="lnum93"> 93:</span><span> $<span>return</span> = round($bytes / pow(1024,1),2);</span>
<span id="lnum94"> 94:</span><span> $suffix = <span>'KB'</span>;</span>
<span id="lnum95"> 95:</span><span> }</span>
<span id="lnum96"> 96:</span><span> <span>else</span></span>
<span id="lnum97"> 97:</span><span> {</span>
<span id="lnum98"> 98:</span><span> $<span>return</span> = $bytes;</span>
<span id="lnum99"> 99:</span><span> $suffix = <span>'B'</span>;</span>
<span id="lnum100"> 100:</span><span> }</span>
<span id="lnum101"> 101:</span><span> <span>return</span> $<span>return</span>.<span>" "</span>.$suffix;</span>
<span id="lnum102"> 102:</span><span> }</span>
<span id="lnum103"> 103:</span>
<span id="lnum104"> 104:</span><span> <span>/*调用函数，传入test目录下的test.txt文件*/</span></span>
<span id="lnum105"> 105:</span><span> getFilePro(<span>'./test/div.html'</span>);</span>
<span id="lnum106"> 106:</span><span> ?></span>结果:
二、目录的操作
目录的操作有：遍历目录、删除、复制、大小统计等
1、遍历目录
<span id="lnum1"> 1:</span><span> <span>/*</span></span>
<span id="lnum2"> 2:</span><span> <span>*遍历目录</span></span>
<span id="lnum3"> 3:</span><span> <span>*@param string $dirName 目录名</span></span>
<span id="lnum4"> 4:</span><span> <span>*/</span></span>
<span id="lnum5"> 5:</span><span> <span>function</span> findDir($dirName)</span>
<span id="lnum6"> 6:</span><span> {</span>
<span id="lnum7"> 7:</span><span> $num = 0; <span>/*统计子文件个数*/</span></span>
<span id="lnum8"> 8:</span><span> $dir_handle = opendir($dirName); <span>/*打开目录*/</span></span>
<span id="lnum9"> 9:</span><span> <span>/*输出目录文件*/</span></span>
<span id="lnum10"> 10:</span><span> <span>echo</span> <span>'<table border="0" align="center" width="600" cellspacing="0" cellpadding="0">'</span>;</span>
<span id="lnum11"> 11:</span><span> <span>echo</span> <span>'<caption><h2 id="目录-span-dirName-span-下的文件">目录'</span>.$dirName.<span>'下的文件</h2></caption>'</span>;</span>
<span id="lnum12"> 12:</span><span> <span>echo</span> <span>'<tr align="left" bgcolor="#cccccc"'</span>;</span>
<span id="lnum13"> 13:</span><span> <span>echo</span> <span>'<th>文件名</th><th>文件大小</th><th>文件类型</th><th>修改时间</th></tr>'</span>;</span>
<span id="lnum14"> 14:</span>
<span id="lnum15"> 15:</span><span> <span>while</span>($file = readdir($dir_handle))</span>
<span id="lnum16"> 16:</span><span> {</span>
<span id="lnum17"> 17:</span><span> $dirFile = $dirName.<span>'/'</span>.$file;</span>
<span id="lnum18"> 18:</span><span> $bgcolor = $num++%2==0?<span>'#ffffff'</span>:<span>'#cccccc'</span>;</span>
<span id="lnum19"> 19:</span><span> <span>echo</span> <span>'<tr bgcolor='</span>.$bgcolor.<span>'>'</span>;</span>
<span id="lnum20"> 20:</span><span> <span>echo</span> <span>'<td>'</span>.$file.<span>'</td>'</span>;</span>
<span id="lnum21"> 21:</span><span> <span>echo</span> <span>'<td>'</span>.filesize($dirFile).<span>'</td>'</span>;</span>
<span id="lnum22"> 22:</span><span> <span>echo</span> <span>'<td>'</span>.filetype($dirFile).<span>'</td>'</span>;</span>
<span id="lnum23"> 23:</span><span> <span>echo</span> <span>'<td>'</span>.date(<span>'Y/n/t'</span>,filemtime($dirFile)).<span>'</td>'</span>;</span>
<span id="lnum24"> 24:</span><span> <span>echo</span> <span>'</tr>'</span>;</span>
<span id="lnum25"> 25:</span><span> }</span>
<span id="lnum26"> 26:</span><span> <span>echo</span> <span>"</table>"</span>;</span>
<span id="lnum27"> 27:</span><span> closedir($dir_handle); <span>/*关闭目录*/</span></span>
<span id="lnum28"> 28:</span><span> <span>echo</span> <span>"在<b>"</span>.$dirName.<span>"</b>目录下共有<b>"</span>.$num.<span>'</b>个子文件'</span>;</span>
<span id="lnum29"> 29:</span><span> }</span>
<span id="lnum30"> 30:</span><span> <span>/*传递当前目录下的test目录*/</span></span>
<span id="lnum31"> 31:</span><span> findDir(<span>'./test'</span>);</span>
结果
2、统计目录大小
<span id="lnum1"> 1:</span><span> <span>/*</span></span>
<span id="lnum2"> 2:</span><span> <span>*统计目录大小</span></span>
<span id="lnum3"> 3:</span><span> <span>*@param string $dirName 目录名</span></span>
<span id="lnum4"> 4:</span><span> <span>*@return double</span></span>
<span id="lnum5"> 5:</span><span> <span>*/</span></span>
<span id="lnum6"> 6:</span>
<span id="lnum7"> 7:</span><span> <span>function</span> dirSize($dirName)</span>
<span id="lnum8"> 8:</span><span> {</span>
<span id="lnum9"> 9:</span><span> $dir_size = 0;</span>
<span id="lnum10"> 10:</span><span> <span>if</span>($dir_handle = @opendir($dirName))</span>
<span id="lnum11"> 11:</span><span> {</span>
<span id="lnum12"> 12:</span><span> <span>while</span> ($fileName = readdir($dir_handle))</span>
<span id="lnum13"> 13:</span><span> {</span>
<span id="lnum14"> 14:</span> /*排除两个特殊目录*/
<span id="lnum15"> 15:</span><span> <span>if</span>($fileName != <span>'.'</span> && $fileName != <span>'..'</span>)</span>
<span id="lnum16"> 16:</span><span> {</span>
<span id="lnum17"> 17:</span><span> $subFile = $dirName.<span>'/'</span>.$fileName;</span>
<span id="lnum18"> 18:</span><span> <span>if</span>(is_file($subFile))</span>
<span id="lnum19"> 19:</span><span> {</span>
<span id="lnum20"> 20:</span><span> $dir_size += filesize($subFile);</span>
<span id="lnum21"> 21:</span><span> }</span>
<span id="lnum22"> 22:</span><span> <span>if</span>(is_dir($subFile))</span>
<span id="lnum23"> 23:</span><span> {</span>
<span id="lnum24"> 24:</span><span> $dir_size += dirSize($subFile);</span>
<span id="lnum25"> 25:</span><span> }</span>
<span id="lnum26"> 26:</span><span> }</span>
<span id="lnum27"> 27:</span><span> }</span>
<span id="lnum28"> 28:</span><span> closedir($dir_handle);</span>
<span id="lnum29"> 29:</span><span> <span>return</span> $dir_size;</span>
<span id="lnum30"> 30:</span><span> }</span>
<span id="lnum31"> 31:</span><span> }</span>
<span id="lnum32"> 32:</span><span> <span>/*传递当前目录下的test目录*/</span></span>
<span id="lnum33"> 33:</span><span> $dir_size = dirSize(<span>'./test'</span>);</span>
<span id="lnum34"> 34:</span><span> <span>echo</span> <span>'./test目录文件大小是：'</span>.round($dir_size / pow(1024,1),2).<span>'KB'</span>;</span>
结果
3、删除目录
<span id="lnum1"> 1:</span><span> <span>/*</span></span>
<span id="lnum2"> 2:</span><span> <span>*删除目录</span></span>
<span id="lnum3"> 3:</span><span> <span>*@param string $dirName 目录名</span></span>
<span id="lnum4"> 4:</span><span> <span>*/</span></span>
<span id="lnum5"> 5:</span><span> <span>function</span> delDir($dirName)</span>
<span id="lnum6"> 6:</span><span> {</span>
<span id="lnum7"> 7:</span><span> <span>/*php中的mkdir函数就可以创建目录*/</span></span>
<span id="lnum8"> 8:</span><span> <span>if</span>(file_exists($dirName))</span>
<span id="lnum9"> 9:</span><span> {</span>
<span id="lnum10"> 10:</span><span> <span>if</span>($dir_handle = @opendir($dirName))</span>
<span id="lnum11"> 11:</span><span> {</span>
<span id="lnum12"> 12:</span><span> <span>while</span> ($fileName = readdir($dir_handle))</span>
<span id="lnum13"> 13:</span><span> {</span>
<span id="lnum14"> 14:</span> /*排除两个特殊目录*/
<span id="lnum15"> 15:</span><span> <span>if</span>($fileName != <span>'.'</span> && $fileName != <span>'..'</span>)</span>
<span id="lnum16"> 16:</span><span> {</span>
<span id="lnum17"> 17:</span><span> $subFile = $dirName.<span>'/'</span>.$fileName;</span>
<span id="lnum18"> 18:</span><span> <span>if</span>(is_file($subFile))</span>
<span id="lnum19"> 19:</span><span> {</span>
<span id="lnum20"> 20:</span><span> unlink($subFile);</span>
<span id="lnum21"> 21:</span><span> }</span>
<span id="lnum22"> 22:</span><span> <span>if</span>(is_dir($subFile))</span>
<span id="lnum23"> 23:</span><span> {</span>
<span id="lnum24"> 24:</span><span> delDir($subFile);</span>
<span id="lnum25"> 25:</span><span> }</span>
<span id="lnum26"> 26:</span><span> }</span>
<span id="lnum27"> 27:</span><span> }</span>
<span id="lnum28"> 28:</span><span> closedir($dir_handle);</span>
<span id="lnum29"> 29:</span><span> rmdir($dirName);</span>
<span id="lnum30"> 30:</span><span> <span>return</span> $dirName.<span>'目录已经删除'</span>;</span>
<span id="lnum31"> 31:</span><span> }</span>
<span id="lnum32"> 32:</span><span> }</span>
<span id="lnum33"> 33:</span><span> }</span>
<span id="lnum34"> 34:</span><span> <span>/*传递test目录的副本test1*/</span></span>
<span id="lnum35"> 35:</span><span> <span>echo</span> delDir(<span>'./test1'</span>);</span>
删除成功的提示信息
4、复制目录
<span id="lnum1"> 1:</span><span> <span>/*</span></span>
<span id="lnum2"> 2:</span><span> <span>*复制目录</span></span>
<span id="lnum3"> 3:</span><span> <span>*@param string $dirSrc 原目录名</span></span>
<span id="lnum4"> 4:</span><span> <span>*@param string $dirTo 目标目录名</span></span>
<span id="lnum5"> 5:</span><span> <span>*/</span></span>
<span id="lnum6"> 6:</span> function copyDir($dirSrc,$dirTo)
<span id="lnum7"> 7:</span><span> {</span>
<span id="lnum8"> 8:</span><span> <span>if</span>(is_file($dirTo))</span>
<span id="lnum9"> 9:</span><span> {</span>
<span id="lnum10"> 10:</span><span> <span>echo</span> <span>'目标目录不能创建'</span>;<span>/*目标不是一个*/</span></span>
<span id="lnum11"> 11:</span><span> <span>return</span>;</span>
<span id="lnum12"> 12:</span><span> }</span>
<span id="lnum13"> 13:</span><span> <span>if</span>(!file_exists($dirTo))</span>
<span id="lnum14"> 14:</span> {
<span id="lnum15"> 15:</span><span> <span>/*目录不存在则创建*/</span></span>
<span id="lnum16"> 16:</span><span> mkdir($dirTo);</span>
<span id="lnum17"> 17:</span><span> }</span>
<span id="lnum18"> 18:</span><span> <span>if</span>($dir_handle = @opendir($dirSrc))</span>
<span id="lnum19"> 19:</span><span> {</span>
<span id="lnum20"> 20:</span><span> <span>while</span> ($fileName = readdir($dir_handle))</span>
<span id="lnum21"> 21:</span><span> {</span>
<span id="lnum22"> 22:</span><span> <span>/*排除两个特殊目录*/</span></span>
<span id="lnum23"> 23:</span><span> <span>if</span>($fileName != <span>'.'</span> && $fileName != <span>'..'</span>)</span>
<span id="lnum24"> 24:</span><span> {</span>
<span id="lnum25"> 25:</span><span> $subSrcFile = $dirSrc.<span>'/'</span>.$fileName;</span>
<span id="lnum26"> 26:</span><span> $subToFile = $dirTo.<span>'/'</span>.$fileName;</span>
<span id="lnum27"> 27:</span><span> <span>if</span>(is_file($subSrcFile))</span>
<span id="lnum28"> 28:</span><span> {</span>
<span id="lnum29"> 29:</span><span> copy($subSrcFile,$subToFile);</span>
<span id="lnum30"> 30:</span><span> }</span>
<span id="lnum31"> 31:</span><span> <span>if</span>(is_dir($subSrcFile))</span>
<span id="lnum32"> 32:</span><span> {</span>
<span id="lnum33"> 33:</span><span> copyDir($subSrcFile,$subToFile);</span>
<span id="lnum34"> 34:</span><span> }</span>
<span id="lnum35"> 35:</span><span> }</span>
<span id="lnum36"> 36:</span><span> }</span>
<span id="lnum37"> 37:</span><span> closedir($dir_handle);</span>
<span id="lnum38"> 38:</span><span> <span>return</span> $dirSrc.<span>'目录已经复制到'</span>.$dirTo.<span>'目录'</span>;</span>
<span id="lnum39"> 39:</span><span> }</span>
<span id="lnum40"> 40:</span><span> }</span>
<span id="lnum41"> 41:</span><span> <span>echo</span> copyDir(<span>'./test'</span>,<span>'../testcopy'</span>);</span>
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Hot Tools
PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
SublimeText3 Chinese version
Chinese version, very easy to use
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
Dreamweaver Mac version
Visual web development tools
